Mobile Communications I - IHP Microelectronics

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History of wireless communication I1896 Guglielmo Marconi first demonstration of wirelesstelegraphy (digital!) long wave transmission, hightransmission power necessary (> 200kw)1907 Commercial transatlantic connections huge base stations(30 100m high antennas)1915 Wireless voice transmission New York - San Francisco1920 Discovery of short waves by Marconi reflection at the ionosphere smaller sender and receiver, possible due to the invention of the vacuumtube (1906, Lee DeForest and Robert von Lieben)1926 Train-phone on the line Hamburg - Berlin wires parallel to the railroad trackDr.-Ing. Jean-Pierre Ebert MC-I SS07 1.16
History of wireless communication II1928 many TV broadcast trials (across Atlantic, color TV, TV news)1933 Frequency modulation (E. H. Armstrong)1958 A-Netz in Germany analog, 160MHz, connection setup only from the mobile station, nohandover, 80% coverage, 1971 11000 customers1972 B-Netz in Germany analog, 160MHz, connection setup from the fixed network too (butlocation of the mobile station has to be known) available also in A, NL and LUX, 1979 13000 customer in D1979 NMT at 450MHz (Scandinavian countries)1982 Start of GSM-specification goal: pan-European digital mobile phone system with roaming1983 Start of the American AMPS (Advanced <strong>Mobile</strong> PhoneSystem, analog)1984 CT-1 standard (Europe) for cordless telephonesDr.-Ing. Jean-Pierre Ebert MC-I SS07 1.17
Page 3 and 4: Administrative Issues Lecture dates
Page 5 and 6: Chapter 1:Introduction A case for m
Page 7 and 8: Mobile communicationTwo aspects of
Page 9 and 10: Mobile and wireless services - Alwa
Page 11 and 12: Location dependent servicesLocation
Page 13 and 14: Effects of device portabilityPower
Page 15: Early history of wireless communica
Page 19 and 20: History of wireless communication I
Page 21 and 22: Wireless systems: Overview of the d
Page 23 and 24: Worldwide wireless subscribers (old
Page 25 and 26: Worldwide cellular subscriber growt
Page 27 and 28: Mobile statistics snapshot (09/2002
Page 29 and 30: Wireless Internet ChallengesAttribu
Page 31 and 32: Influence of mobile communication t

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